Forum members were questioning my average mpg on another thread they said it did not sound right , my mpg that day was 57 mpg which was done with a riding partner with his pocket calculator using my mileages and 2 gas receipts he was also present at both fuel stops , actually he could not believe it either because at times i was heavy on the throttle , we rode on the highway and backroads that day and put on about 200 miles, he rides a 1978 1/2 lowrider which has over 50,000 on it and he has been doing his averages since he bought the bike brand new back in 78 , do numbers lie ?

Step 1
Fill up your tank at a gas station and write down the mileage that the odometer says before you leave. An example would be your odometer says 31,000 miles. Make sure to fill the tank, not just get some gas. Place the paper in a safe place where you will know where it is when you need it next.

Step 2
Drive the vehicle until you need to put more gas in it. It doesn't have to be empty, but you will want to put some mileage on it to get a good average.

Step 3
Fill the tank up again and write down how many gallons it took to fill it up. Let's say you need 10 gallons of gas to completely fill the tank.

Step 4
Write down the new mileage on your paper. Subtract the first mileage (from Step1) from the new mileage and write down the answer. Your new mileage is 31, 200. Take the new mileage reading of 31,200 and subtract the first mileage reading of 31,000. You are left with 200 miles.

Step 5
Divide the number of miles you drove by the number of gallons of gas it took to fill the tank. The answer will be your miles per gallon. Divide the 200 miles you drove by the 10 gallons of gas you used; 200 divided by 10 equals 20. You are getting 20 miles to the gallon in our example.

Right about 47 unless I'm short hopping it. I just put drag pipes on this week. Waiting to see if the mileage goes up or down. Your would have to be driving with the enrichiner stuck on to be in the 20s.

Forum members were questioning my average mpg on another thread they said it did not sound right , my mpg that day which was done with a riding partner with his pocket calculator using my mileages and 2 gas receipts he was also present at both fuel stops , actually he could not believe it either because at times i was heavy on the throttle , we rode on the highway and backroads that day and put on about 200 miles, he rides a 1978 1/2 lowrider which has over 50,000 on it and he has been doing his averages since he bought the bike brand new back in 78 , do numbers lie ?

Step 1
Fill up your tank at a gas station and write down the mileage that the odometer says before you leave. An example would be your odometer says 31,000 miles. Make sure to fill the tank, not just get some gas. Place the paper in a safe place where you will know where it is when you need it next.

Step 2
Drive the vehicle until you need to put more gas in it. It doesn't have to be empty, but you will want to put some mileage on it to get a good average.

Step 3
Fill the tank up again and write down how many gallons it took to fill it up. Let's say you need 10 gallons of gas to completely fill the tank.

Step 4
Write down the new mileage on your paper. Subtract the first mileage (from Step1) from the new mileage and write down the answer. Your new mileage is 31, 200. Take the new mileage reading of 31,200 and subtract the first mileage reading of 31,000. You are left with 200 miles.

Step 5
Divide the number of miles you drove by the number of gallons of gas it took to fill the tank. The answer will be your miles per gallon. Divide the 200 miles you drove by the 10 gallons of gas you used; 200 divided by 10 equals 20. You are getting 20 miles to the gallon in our example.

Why Not just use one of the trip resets? I use (A) for trips and (B) for service miles?
I just leave mine set on (A) Always looking at how many miles on the tank full..
Better than watching the fuel gauge. When (A) gets to 150 I start lookin for gas.
But in your case, with your average of 57mpg, you wont have to start looking for gas til around 260 miles per tank.